[Correction of hypovolemia in piglets aged 3 and 28 days]. / Korrektsiia gipovolemii u porosiat 3- i 28-dnevnogo vozrasta.

It is shown that restoration of plasma volume in 3-day-old pigs 6-12 hours after a 33% blood loss is a part of fluid elimination from the body as it occurs due to transfer of interstitial and, probably, intracellular liquid into the circulation and is accompanied by activation of diuresis. Activation of this process is not participated neither by hydrocortisone nor ACTH. Vasopressin and aldosterone have a negative effect on intravasation of interstitial fluid.

[The correlation of the different mechanisms of adaptation of the circulatory system to hypovolemia in ontogeny]. / Sootnoshenie razlichnykh mekhanizmov adaptatsii sistemy krovoobrashcheniia k gipovolemii v ontogeneze.

It was established in experiments on narcotized adult cats and pigs of different age that postnatal mammal development is characterized by the presence of a period of the smallest resistance to massive blood loss (33% of circulating blood volume) when the ability for fast spontaneous restitution of plasma volume is already lost but the mechanism of increasing resistance of peripheral vessels to hypovolemia for support of perfusion pressure of adult mammal is still weak.